feat(intensity_object): Add non-blocking plot functionality with file output

[ashiqguntupalli]

Enhanced the intensity_object class to better support automated workflows and LLM tool integration:

• Add output_dir parameter to constructor for default plot save location
• Add save_path and display parameters to show_map method
• Add comprehensive docstrings for new parameters

This change allows the plotting functionality to work in non-blocking mode
by saving plots to files instead of requiring interactive display,
making it more suitable for automated processing and LLM tool integration.

[ashiqguntupalli]

@MicroscopeMaestro
Somehow the Commits are on my wife's name. However please have a look.